this post was submitted on 21 Jan 2025
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There’s quite a bit of research on lump sum investing vs dollar cost averaging. Here is one example: https://investor.vanguard.com/investor-resources-education/news/lump-sum-investing-versus-cost-averaging-which-is-better
Generally lump sum investing comes out ahead by a bit. However, my personal opinion is that it isn’t enough to always point to it and say that’s what you should do. If you’re more comfortable doing one over the other, then do it.
Generally time in the market beats timing the market, which is what you’d be doing by dollar cost averaging because you think the market is going to crash.
The 'dollar cost averaging' narrative started as a response to people who wanted to hoard a portion of their monthly paycheck waiting for a good time/correction to buy into the market. It's essentially a corollary of 'time in market beats timing market,' and both could be stated as 'invest it all, right now.' Especially if your horizon is 10+ years out: a few percentage points today is nothing to the doubling you can expect in a decade.